gdb/testsuite/gdb.trace/trace-break.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2011-2013 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifdef SYMBOL_PREFIX
  19 #define SYMBOL(str)     SYMBOL_PREFIX #str
  20 #else
  21 #define SYMBOL(str)     #str
  22 #endif
  23
  24 /* Called from asm.  */
  25 static void __attribute__((used))
  26 func (void)
  27 {}
  28
  29 static void
  30 marker (void)
  31 {
  32   /* Some code to make sure `b marker' and `b set_point' set
  33      breakpoints at different addresses.  */
  34   int a = 0;
  35   int b = a;
  36
  37   /* `set_point' is the label where we'll set multiple tracepoints and
  38      breakpoints at.  The insn at the label must the large enough to
  39      fit a fast tracepoint jump.  */
  40   asm ("    .global " SYMBOL(set_point) "\n"
  41        SYMBOL(set_point) ":\n"
  42 #if (defined __x86_64__ || defined __i386__)
  43        "    call " SYMBOL(func) "\n"
  44 #endif
  45        );
  46
  47   asm ("    .global " SYMBOL(after_set_point) "\n"
  48        SYMBOL(after_set_point) ":\n"
  49 #if (defined __x86_64__ || defined __i386__)
  50        "    call " SYMBOL(func) "\n"
  51 #endif
  52        );
  53 }
  54
  55 static void
  56 end (void)
  57 {}
  58
  59 int
  60 main ()
  61 {
  62   marker ();
  63   end ();
  64   return 0;
  65 }